The human body is made up of around 60% water. It plays a role in regulating temperature, transporting nutrients and keeping the brain working. Safe to say hydration affects just about everything.
The effects of a small deficit
Even mild, barely noticeable dehydration is enough to reduce focus, increase perceived effort and hurt your mood. During training, it pushes your heart rate up and drags performance down.
Staying well hydrated, without overdoing it
No need to count every millilitre. Drink regularly throughout the day, a bit more when it's hot or you're sweating, and listen to your thirst. Pale urine is a good sign. Drinking too much at once doesn't add any extra benefit.
Connect it to your fitness
The KEORA Ring tracks your heart rate and recovery. By cross-referencing them with your days, you can spot how hydration, sleep, and stress influence how you actually feel.
Water doesn't work miracles. But not getting enough is enough to slow everything down.